Inferencing in the Good Relations Ontology
Suppose that in addition to its manicure services, Plush were to offer a massage service, priced by the hour. If we wanted to describe a one-and-a-half-hour massage session, the notion of includes would have to be reified, just as we did for the price. GR provides a means to do this, by introducing the notion of a TypeAndQuantityNode:
This model differs from the description of the manicure in two ways; first, it includes the intermediate entity Quantity_1 that allows us to make multiple statements about the massage service; in particular, that it lasts for 1.5 hours. The second difference is that the ...
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